Parasitology Quiz: Intestinal and Urogenital Flagellates

<p>Trichomonas tenax (A)</p> Signup and view all the answers

<p>Metronidazole (C)</p> Signup and view all the answers

<p>Knob-like protuberance (D)</p> Signup and view all the answers

<p>A large, chromatin-rich karyosome surrounded by achromatic globules (B)</p> Signup and view all the answers

<p>Entamoeba gingivalis (A)</p> Signup and view all the answers

<p>More vacuolated or granular endoplasm with bacteria and debris, no RBC (A)</p> Signup and view all the answers

<p>Larger size and 8 nuclei (B)</p> Signup and view all the answers

<p>Entamoeba moshkovskii (C)</p> Signup and view all the answers

<p>Broad, blunt pseudopodia used for feeding (C)</p> Signup and view all the answers

<p>3 to 10 months after initial infection (B)</p> Signup and view all the answers

<p>Delayed bilateral pain out of proportion to the extent of tissue injury (D)</p> Signup and view all the answers

<p>Suramin IM (A)</p> Signup and view all the answers

<p>Phlebotomus sandfly (B)</p> Signup and view all the answers

<p>An erythematous papule or nodule (B)</p> Signup and view all the answers

<p>Two weeks to several months (C)</p> Signup and view all the answers

<p>Ingestion of cysticercoid infected arthropods (D)</p> Signup and view all the answers

<p>Cats (C)</p> Signup and view all the answers

<p>Cysticercus (C)</p> Signup and view all the answers

<p>Dipylidiasis (D)</p> Signup and view all the answers

<p>Children (C)</p> Signup and view all the answers

<p>Praziquantel (C)</p> Signup and view all the answers

<p>Oriental blood fluke disease (A)</p> Signup and view all the answers

<p>Cercariae (B)</p> Signup and view all the answers

<p>Humans (A)</p> Signup and view all the answers

<p>Lateral spine (C)</p> Signup and view all the answers

<p>Snail and Crab (D)</p> Signup and view all the answers

<p>Ingestion of encysted metacercariae (B)</p> Signup and view all the answers

The transmission of Giardia lamblia occurs primarily through the fecal-oral route, often due to contaminated water or food.

This condition is caused by the parasite Trichomonas vaginalis, often presenting with a strawberry-like appearance of the cervix.

The trophozoite is the active, motile stage of Trichomonas vaginalis responsible for causing infection and is used for diagnosis.

Trichomonas tenax is a non-pathogenic flagellate commonly found in the oral cavity.

Metronidazole is the preferred drug for treating invasive amoebiasis caused by Entamoeba histolytica, which can affect various organs.

The cyst of Chilomastix mesnili is characterized by its distinct lemon shape with a prominent flagellum at its anterior end.

Iodamoeba is identified by its nucleus, which contains a large karyosome, a prominent structure within the nucleus.

Entamoeba histolytica does not reside in the intestines and lacks a cyst stage, unlike other Entamoeba species.

The trophozoite stage of Entamoeba coli is characterized by its larger size and the presence of bacteria within its cytoplasm.

The Entamoeba coli cyst is identified by its thick wall and contains 1 to 8 nuclei.

Entamoeba polecki is unique in its ability to survive in a wide range of osmotic conditions and can even grow at room temperature.

The trophozoite of Entamoeba polecki possesses an oval shape and distinctive internal structures.

Gambian trypanosomiasis, caused by T. brucei gambiense, progresses through different stages. The late phase, also known as the meningoencephalitic stage, typically occurs months after the initial infection.

Kerandel's sign in trypanosomiasis is characterized by swelling of the cervical lymph nodes, often indicating a progressing infection.

In the early stage, also known as the hemolymphatic stage, of T. brucei gambiense, Pentamidine is the recommended treatment.

Phlebotomus sandflies act as vectors for Leishmaniasis transmission in the Old World, responsible for spreading the disease.

Cutaneous Leishmaniasis is characterized by ulcerative skin lesions that can appear weeks to months after exposure to the parasite.

The incubation period for Cutaneous Leishmaniasis can range from weeks to a few months before symptoms manifest.

Hymenolepis nana, a type of tapeworm, is primarily transmitted through the ingestion of embryonated eggs found in contaminated food or water.

Unlike dogs and cats, rodents are the definitive hosts for Hymenolepis diminuta, a type of tapeworm.

The embryonated egg, a stage in the life cycle of Hymenolepis nana, functions as the infective stage, capable of causing infection.

Dipylidium caninum infection is commonly known as tapeworm infection and is primarily found in young children.

Young children are the most frequent group affected by Dipylidium caninum infection.

Praziquantel is the drug of choice for treating Hymenolepiasis, a condition caused by tapeworms of the Hymenolepis genus.

Schistosoma spp., a group of parasitic worms, cause a disease commonly known as Schistosomiasis, also called snail fever.

The cercaria is the infectious stage of Schistosoma spp., capable of penetrating the skin and entering the human body.

Humans act as the definitive host for Schistosoma spp., harboring the adult worms responsible for reproduction.

The eggs of S. japonicum, a type of Schistosoma, are typically found in the mesenteric veins of the human intestine where the adult worms reside.

Freshwater crabs serve as the intermediate host for Paragonimus westermani, a parasitic lung fluke.

Paragonimus westermani infection is transmitted through the consumption of undercooked crab or crayfish.